{
 "ocl_version": "0.1.0",
 "name": "Vista Road",
 "slug": "vista-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.516719259033493,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1545.0,
   "end_distance_m": 1547.0,
   "start_elevation_m": 160.81569876793236,
   "end_elevation_m": 161.32603315311303,
   "min_gradient_pct": -15.015218704562017
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.57760533330126,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1544.0,
   "end_distance_m": 1547.0,
   "start_elevation_m": 160.588704993114,
   "end_elevation_m": 161.32603315311303,
   "min_gradient_pct": -14.783318249434766
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.014393986978348,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1544.0,
   "end_distance_m": 1549.0,
   "start_elevation_m": 160.588704993114,
   "end_elevation_m": 161.6394246924629,
   "min_gradient_pct": -14.61245029058432
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.254098460024892,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 866.0,
   "end_distance_m": 876.0,
   "start_elevation_m": 125.27861036905212,
   "end_elevation_m": 127.3040202150546,
   "min_gradient_pct": -14.425432786207182
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.075697767554956,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 866.0,
   "end_distance_m": 886.0,
   "start_elevation_m": 125.27861036905212,
   "end_elevation_m": 129.2937499225631,
   "min_gradient_pct": -14.065758313873289
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.038339656140636,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 866.0,
   "end_distance_m": 891.0,
   "start_elevation_m": 125.27861036905212,
   "end_elevation_m": 130.28819528308728,
   "min_gradient_pct": -13.934886890379403
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.43511184571858,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 858.0,
   "end_distance_m": 908.0,
   "start_elevation_m": 123.95560872355624,
   "end_elevation_m": 133.17316464641553,
   "min_gradient_pct": -13.188451699503844
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.828488250836385,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 864.0,
   "end_distance_m": 964.0,
   "start_elevation_m": 124.91627762540907,
   "end_elevation_m": 140.74476587624545,
   "min_gradient_pct": -4.9039417044708955
  }
 ],
 "shape": {
  "ascent_concentration": 0.513,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 182.0,
  "shape_class": "stepped"
 },
 "length_m": 1599.3857236183953,
 "start_elevation_m": 98.99937836835767,
 "end_elevation_m": 166.84115454161355,
 "endpoint_gain_m": 67.84177617325588,
 "overall_gradient_pct": 4.2417395110776015,
 "accumulated_ascent_m": 82.58138802168604,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.014393986978348,
   "start_distance_m": 1544.0,
   "end_distance_m": 1549.0,
   "midpoint_distance_m": 1546.5,
   "start_elevation_m": 160.588704993114,
   "end_elevation_m": 161.6394246924629,
   "start_xy": [
    552322.3236743655,
    4531374.754030727
   ],
   "end_xy": [
    552318.011681702,
    4531377.285180518
   ]
  },
  "max_10m": {
   "gradient_pct": 20.254098460024892,
   "start_distance_m": 866.0,
   "end_distance_m": 876.0,
   "midpoint_distance_m": 871.0,
   "start_elevation_m": 125.27861036905212,
   "end_elevation_m": 127.3040202150546,
   "start_xy": [
    552276.626085841,
    4530847.200868586
   ],
   "end_xy": [
    552266.7516554894,
    4530848.780623388
   ]
  },
  "max_20m": {
   "gradient_pct": 20.075697767554956,
   "start_distance_m": 866.0,
   "end_distance_m": 886.0,
   "midpoint_distance_m": 876.0,
   "start_elevation_m": 125.27861036905212,
   "end_elevation_m": 129.2937499225631,
   "start_xy": [
    552276.626085841,
    4530847.200868586
   ],
   "end_xy": [
    552256.8772251379,
    4530850.360378189
   ]
  },
  "max_25m": {
   "gradient_pct": 20.038339656140636,
   "start_distance_m": 866.0,
   "end_distance_m": 891.0,
   "midpoint_distance_m": 878.5,
   "start_elevation_m": 125.27861036905212,
   "end_elevation_m": 130.28819528308728,
   "start_xy": [
    552276.626085841,
    4530847.200868586
   ],
   "end_xy": [
    552251.9400099621,
    4530851.15025559
   ]
  },
  "max_50m": {
   "gradient_pct": 18.43511184571858,
   "start_distance_m": 858.0,
   "end_distance_m": 908.0,
   "midpoint_distance_m": 883.0,
   "start_elevation_m": 123.95560872355624,
   "end_elevation_m": 133.17316464641553,
   "start_xy": [
    552284.5256301223,
    4530845.937064745
   ],
   "end_xy": [
    552235.1436119863,
    4530853.7725644745
   ]
  },
  "max_100m": {
   "gradient_pct": 15.828488250836385,
   "start_distance_m": 864.0,
   "end_distance_m": 964.0,
   "midpoint_distance_m": 914.0,
   "start_elevation_m": 124.91627762540907,
   "end_elevation_m": 140.74476587624545,
   "start_xy": [
    552278.6009719113,
    4530846.884917626
   ],
   "end_xy": [
    552179.7785493421,
    4530862.181478697
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -14.61245029058432,
   "start_distance_m": 1499.0,
   "end_distance_m": 1504.0,
   "midpoint_distance_m": 1501.5,
   "start_elevation_m": 165.773032712472,
   "end_elevation_m": 165.0424101979428,
   "start_xy": [
    552318.7209014003,
    4531332.846161991
   ],
   "end_xy": [
    552319.6290379734,
    4531337.762999183
   ]
  },
  "min_10m": {
   "gradient_pct": -14.425432786207182,
   "start_distance_m": 1496.0,
   "end_distance_m": 1506.0,
   "midpoint_distance_m": 1501.0,
   "start_elevation_m": 166.20109130644238,
   "end_elevation_m": 164.75854802782166,
   "start_xy": [
    552318.1760194566,
    4531329.896059677
   ],
   "end_xy": [
    552319.9922926027,
    4531339.729734059
   ]
  },
  "min_20m": {
   "gradient_pct": -14.065758313873289,
   "start_distance_m": 1494.0,
   "end_distance_m": 1514.0,
   "midpoint_distance_m": 1504.0,
   "start_elevation_m": 166.47260721384188,
   "end_elevation_m": 163.65945555106723,
   "start_xy": [
    552317.8127648273,
    4531327.9293248
   ],
   "end_xy": [
    552321.4453111194,
    4531347.596673565
   ]
  },
  "min_25m": {
   "gradient_pct": -13.934886890379403,
   "start_distance_m": 1491.0,
   "end_distance_m": 1516.0,
   "midpoint_distance_m": 1503.5,
   "start_elevation_m": 166.88037656496874,
   "end_elevation_m": 163.3966548423739,
   "start_xy": [
    552317.2678828835,
    4531324.979222486
   ],
   "end_xy": [
    552321.8085657486,
    4531349.563408441
   ]
  },
  "min_50m": {
   "gradient_pct": -13.188451699503844,
   "start_distance_m": 1489.0,
   "end_distance_m": 1539.0,
   "midpoint_distance_m": 1514.0,
   "start_elevation_m": 167.10618123020362,
   "end_elevation_m": 160.5119553804517,
   "start_xy": [
    552316.9046282544,
    4531323.012487609
   ],
   "end_xy": [
    552326.3543843138,
    4531372.102973576
   ]
  },
  "min_100m": {
   "gradient_pct": -4.9039417044708955,
   "start_distance_m": 1444.0,
   "end_distance_m": 1544.0,
   "midpoint_distance_m": 1494.0,
   "start_elevation_m": 165.4926466975849,
   "end_elevation_m": 160.588704993114,
   "start_xy": [
    552308.731399097,
    4531278.760952888
   ],
   "end_xy": [
    552322.3236743655,
    4531374.754030727
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.516719259033493,
   "start_distance_m": 1545.0,
   "end_distance_m": 1547.0,
   "midpoint_distance_m": 1546.0,
   "start_elevation_m": 160.81569876793236,
   "end_elevation_m": 161.32603315311303,
   "start_xy": [
    552321.4612758328,
    4531375.260260685
   ],
   "end_xy": [
    552319.7364787674,
    4531376.272720602
   ]
  },
  "max_3m": {
   "gradient_pct": 24.57760533330126,
   "start_distance_m": 1544.0,
   "end_distance_m": 1547.0,
   "midpoint_distance_m": 1545.5,
   "start_elevation_m": 160.588704993114,
   "end_elevation_m": 161.32603315311303,
   "start_xy": [
    552322.3236743655,
    4531374.754030727
   ],
   "end_xy": [
    552319.7364787674,
    4531376.272720602
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.244,
   "obstruction_max_height_m": 29.79,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/nj/USGS_1M_18_x55y454_NJ_NW_New_Jersey_6_County_Lidar_2017_B17.tif"
  ],
  "calculated_at": "2026-09-06T01:56:24+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-jersey-2026-09-06.osm.pbf",
  "osm_snapshot": "2026-09-04T20:21:21Z",
  "run_id": "nj-run2-260906",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, NJ_NW_New_Jersey_6_County_Lidar_2017_B17 (collected 2017)",
  "elevation_tile_ids": [
   "x55y454"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NJ_NW6Co_2017",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.992,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Montville",
  "county": "New Jersey"
 }
}